US4288573AExpiredUtilityPatentIndex 62

Blends of low density ethylene polymers with certain polyesters

Assignee: GULF OIL CORPPriority: Jul 28, 1980Filed: Jul 28, 1980Granted: Sep 8, 1981

Est. expiryJul 28, 2000(expired)· nominal 20-yr term from priority

Inventors:KARIM KHALID A REA JAMES H

C08L 23/06C08L 67/00

PatentIndex Score

Cited by

References

Claims

Abstract

A compatible blend of polymers is disclosed and consists essentially of 100 parts by weight of a low density ethylene polymer and about 0.2 to 3 parts by weight of either poly(ethylene adipate) or poly(trimethylene adipate). The polymer blends have a lower sealing temperature than the low density ethylene polymer contained therein.

Claims

exact text as granted — not AI-modified

What is claimed: 
     
       1. A compatible blend of polymers consisting essentially of: (a) 100 parts by weight of an ethylene polymer, and   (b) About 0.2 to 3 parts by weight of a polyester resin; said ethylene polymer being a homopolymer of ethylene or copolymer of ethylene with higher alpha-olefins, having a density of less than about 0.945 and a melt index in the range of about 0.5-20, said polyester being poly(ethylene adipate) or poly(trimethylene adipate).   
     
     
       2. A composition of claim 1 containing 100 parts by weight of the ethylene copolymer and about 1 to 2 parts by weight of the polyester. 
     
     
       3. A composition of claim 1 in which the ethylene polymer has a density of less than about 0.94 and a melt index in the range of about 0.5-10. 
     
     
       4. A composition of claim 2 in which the ethylene polymer has a density of less than about 0.93 and a melt index in the range of about 0.5-5.0. 
     
     
       5. A composition of claim 1, 2, 3, or 4 in which the polyester is poly(ethylene adipate). 
     
     
       6. A composition of claim 1, 2, 3, or 4 in which the polyester is poly(trimethylene adipate). 
     
     
       7. A method for lowering the seal temperature of a film of a low density ethylene polymer which consists essentially of uniformly dispersing about 0.2 to 3 parts by weight of poly(ethylene adipate) or poly(trimethylene adipate) in 100 parts by weight of said ethylene polymer. 
     
     
       8. The method of claim 7 in which about 1 to 2 parts of the poly(ethylene adipate) or poly(trimethylene adipate) are dispersed in the ethylene polymer. 
     
     
       9. A film of a polymer blend of claim 1, 2, 3, or 4.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.